Articles Providing Long Lasting Fragrances

ABSTRACT

A dispenser includes at least two reservoirs and dispenses microcapsules and a volatile solvent.

TECHNICAL FIELD

The present disclosure generally relates to articles and methods fordispensing a dose of two compositions, wherein at least one of thecompositions includes microcapsules containing a fragrance.

BACKGROUND

Consumers often desire to deliver pleasant fragrances during and/orafter application of a product. In fact, it is known that even ancientEgyptians utilized fragrances for their own personal enjoyment. Suchfragrances often contain perfume oils and/or other odoriferous materialsthat provide a scent for a limited period of time. The limited period ofnoticeability for fragrances is typically a result of the volatility ofthe fragrance. In order to compensate for the limited period ofnoticeability of fragrances, it is not uncommon for some consumers tospray a fragrance multiple times during the day in order to extend theperiod of noticeability. This reapplication may not be desirable toconsumers as they may be required to carry containers of fine fragranceabout their person to perform the reapplication during the day. Thus,there exists a need for products that can deliver fragrances with alonger duration of noticeability.

SUMMARY

A dispenser comprising: a first reservoir in liquid communication with afirst pump, the first pump comprising a first piston; a second reservoirin liquid communication with a second pump, the second pump comprising asecond piston; at least one exit orifice; and an actuator; wherein thefirst pump is in liquid communication with the at least one exitorifice; wherein the second pump is in liquid communication with the atleast one exit orifice; wherein said first and second pistons are incommunication with the actuator; wherein the first reservoir comprisesthe first composition, the first composition comprising a volatilesolvent and a first fragrance; wherein the second reservoir comprisesthe second composition, the second composition comprising a carrier anda plurality of microcapsules; wherein the at least one exit orificedispenses a first dose of the first composition and a second dose of thesecond composition.

A method of providing a longer lasting fragrance, the method comprisingapplying to a situs a mixture of a first composition and a secondcomposition using a dispenser comprising: a first reservoir in liquidcommunication with a first pump, the first pump comprising a firstpiston; a second reservoir in liquid communication with a second pump,the second pump comprising a second piston; at least one exit orifice;and an actuator; wherein the first pump is in communication with the atleast one exit orifice; wherein the second pump is in communication withthe at least one exit orifice; wherein said first and second pistons arein communication with the actuator; wherein the first reservoircomprises the first composition, the first composition comprising avolatile solvent and a first fragrance; wherein the second reservoircomprises the second composition, the second composition comprising acarrier and a plurality of microcapsules; wherein the at least one exitorifice dispenses a first dose of the first composition and a seconddose of the second composition.

BRIEF DESCRIPTION OF THE DRAWINGS

While the specification concludes with claims, it is believed that thesame will be better understood from the following description taken inconjunction with the accompanying drawings in which:

FIG. 1 is a front view of a dispenser;

FIG. 2 is a side view of a dispenser;

FIG. 3 is a cross sectional view of the side of a dispenser;

FIG. 4 is a cross sectional view of the side of a dispenser; and

FIG. 5 is a cross sectional view of the side of a dispenser.

DETAILED DESCRIPTION

All percentages are weight percentages based on the weight of thecomposition, unless otherwise specified. All ratios are weight ratios,unless specifically stated otherwise. All numeric ranges are inclusiveof narrower ranges; delineated upper and lower range limits areinterchangeable to create further ranges not explicitly delineated. Thenumber of significant digits conveys neither limitation on the indicatedamounts nor on the accuracy of the measurements. All measurements areunderstood to be made at about 25° C. and at ambient conditions, where“ambient conditions” means conditions under about one atmosphere ofpressure and at about 50% relative humidity.

“Composition” as used herein, means ingredients suitable for topicalapplication on mammalian keratinous tissue. Such compositions may alsobe suitable for application to textiles or any other form of clothingincluding, but not limited to, clothing made from synthetic fibers likenylons and polyesters, and clothing made from acetate, bamboo, cupro,hemp, flannel, jute, lyocell, PVC-polyvinyl chloride, rayon, recycledmaterials, rubber, soy, Tyvek, cotton, and other natural fibers.

“Free of” means that the stated ingredient has not been added to thecomposition. However, the stated ingredient may incidentally form as abyproduct or a reaction product of the other components of thecomposition.

“Nonvolatile” refers to those materials that liquid or solid underambient conditions and have a measurable vapor pressure at 25° C. Thesematerials typically have a vapor pressure of less than about 0.0000001mmHg, and an average boiling point typically greater than about 250° C.

“Soluble” means at least about 0.1 g of solute dissolves in 100 ml ofsolvent at 25° C. and 1 atm of pressure.

“Substantially free of” means an amount of a material that is less than1%, 0.5%, 0.25%, 0.1%, 0.05%, 0.01%, or 0.001% by weight of acomposition..

“Derivatives” as used herein, include but are not limited to, amide,ether, ester, amino, carboxyl, acetyl, and/or alcohol derivatives of agiven chemical.

“Skin care actives” as used herein, means substances that when appliedto the skin, provide a benefit or improvement to the skin. It is to beunderstood that skin care actives are useful not only for application toskin, but also to hair, nails and other mammalian keratinous tissue.

“Situs” means the location where the composition is applied.Non-limiting examples of a situs include mammalian keratinous tissue andclothing.

“Volatile,” as used herein, unless otherwise specified, refers to thosematerials that are liquid or SOLID under ambient conditions and whichhave a measurable vapor pressure at 25° C. These materials typicallyhave a vapor pressure of greater than about 0.0000001 mmHg,alternatively from about 0.02 mmHg to about 20 mmHg, and an averageboiling point typically less than about 250° C., alternatively less thanabout 235° C.

Perfumers often select odoriferous materials to blend into a compositionwith the goal of achieving an overall specific fragrance with aparticular strength and character. In so doing, the perfumer may takeinto account the individual character and volatility of the odoriferousmaterials when forming the fragrance. Conventional compositions mayoften have a fragrance characterized by a higher amount of the lessvolatile odoriferous materials and lower amounts of the more volatileodoriferous materials. The less volatile odoriferous materials arecommonly referred to as “base notes”, while the more volatileodoriferous materials can be further divided into highly volatileodoriferous materials, identified as “top notes”, and intermediatevolatile odoriferous materials, identified as “middle notes.”

To date, due to the volatility of the odoriferous materials, the typesof fragrance available are limited. In this regard, perfumers oftenblend top notes, middle notes, and base notes to deliver a particularfragrance profile over time. Perfumers may use top notes to deliver theinitial impression of the fragrance, yet may not rely on the top notesto contribute to the overall fragrance profile over time. Middle notesgenerally become the dominant scent to the untrained nose from severalminutes after application and may last up to a few hours afterapplication. Base notes may not be perceived as the dominant scent untilseveral hours after the application of the fragrance or during the“dry-down” period. Base notes may be included to improve thenoticeability of the fragrance over time and to replace the middle notesas the middle notes decline. However, if base notes are reduced orexcluded from the fragrance, the noticeability of the fragrance mayprematurely diminish over time.

Common complaints by users of fragrances include that the middle notesfade too quickly after application of the fragrance and that thecharacter of the middle notes are undesirably altered by the presence oflarge amounts of the base notes during the period known as the“dry-down” phase. To overcome these complaints, users may resort toself-remedies by reapplying their fragrance throughout the day in orderto achieve a fresh burst of top and/or middle notes for delight andnoticability. However, reapplication of the fragrance during the day maynot be desirable as this may require the dispenser containing thefragrance to be readily available to the user during use. It istherefore a challenge to formulate a composition having improvedlongevity and noticability of the fragrance character withoutsubstantially altering the character of the fragrance.

One method known to increase the duration of noticeability of afragrance in a product is to incorporate a controlled-release systeminto a product. In this regard, microcapsules have been included incertain products like deodorants in order to delay the release of thefragrance into the headspace. While microcapsules have existed since the1950s, there are no known products on the market that containmicrocapsules in a composition that also includes ethanol at levelstypically found in fine fragrances or that deliver microcapsules incombination with a volatile solvent like ethanol.

As shown in Table 1 below, the presence of volatile solvents likeethanol in a composition can cause fragrance-loaded microcapsules, suchas those whose shells contain a polyacrylate material, to prematurelyrelease the encapsulated fragrance. This loss was as high as 60% after afive day incubation at room temperature.

TABLE 1 Type of Composition % Leakage Ethanol/Water (3:1 ratio) >60%after 5 days at room temperature

While it may be possible to include fragrance-loaded microcapsules in afine fragrance devoid of a volatile solvent, fine fragrances typicallyinclude a volatile solvent for the benefits the volatile solvent mayprovide. For example, the volatile solvent may be used to solubilize ahydrophobic fragrance. Second, the volatile solvent may act as aninvisible carrier for the fragrance as the volatile solvent may quicklyevaporate after application and may not leave a visible or tactileresidue on the skin and/or clothing. Third, the volatile solvent mayenhance the noticeability of the solubilized fragrance upon evaporation.Therefore, it may be desirable to include a volatile solvent in a finefragrance in addition to fragrance-loaded microcapsules. In this regard,the microcapsules may be used to deliver top and middle notes for anextended period of time, not only increasing the duration of thefragrance, but allowing the perfumer to alter that character of thefragrance over time.

When the stability of an ingredient is compromised by inclusion in aproduct base, a potential solution is to separate the ingredient fromthe product base by using a container with separate reservoirs forstoring the incompatible ingredients. However, separating themicrocapsules from the ethanol-containing composition until dispensingmay still not lead to a consumer noticeable benefit because (1) themicrocapsules and ethanol will either mix at the point of dispensing orimmediately prior to dispensing, depending on the design of thedispenser and (2) the microcapsules and ethanol mixture are typicallyallowed to dry on the situs. Thus, due to the exquisite sensitivity ofthe microcapsules to the volatile solvent, the fragrance-loadedmicrocapsules may not survive intact after application when mixed with avolatile solvent like ethanol even though the microcapsules and volatilesolvent are contained separately.

Additionally, if the dispenser aerosolizes the microcapsules included inthe fine fragrance, the microcapsules must be resilient enough tosurvive the actuation force and other forces that are applied to themicrocapsule during the spraying process as the use of fine fragrancestypically involves spraying the fine fragrance onto a situs like aforearm, neck, or garment. For example, the microcapsule's shell wouldneed to be strong enough to allow for the microcapsule to survive thetravel from the reservoir to the situs without pre-maturely releasingthe core material, yet weak enough so that the microcapsule can stillrelease its core material during normal human movements. Furthermore,enough microcapsules must survive the spraying process such that anoticeable longevity benefit is provided after each use.

Surprisingly, it has been discovered that minimizing the contact timebetween the microcapsules and the volatile solvent (e.g. ethanol) mayallow the microcapsules to deliver a noticeable benefit to a consumer.In some examples, a dispenser may be designed such that the dispenserincludes a first reservoir and a second reservoir. The first reservoirmay include a first composition comprising a volatile solvent and atleast one fragrance. The second reservoir may include second compositioncomprising a plurality of microcapsules encapsulating a fragrance, asuspending agent, and a carrier. The dispenser may be designed todispense a first dose of the first composition and a second dose of thesecond composition and may mix the two compositions before exiting thedispenser and/or in-flight.

Alternatively, two dispensers for application may be used such that onedispenser is used to contain and spray a first composition and thesecond is used to contain and spray a second composition. In thisformat, the first composition may include a volatile solvent and afragrance and the second composition may include a carrier and aplurality of microcapsules encapsulating a fragrance. Said dispensersmay be sold as a kit, the kit containing the two dispensers, andoptionally, advertised as providing a longer lasting fragrance.

Surprisingly, it has also been discovered that microcapsules with afracture strength from about 0.1 MPa to about 25.0 MPa may survive thedispenser's spraying process and may rupture during human movements suchthat a fragrance benefit is provided. As shown in Table 2, a dispensercomprising Composition A, a dispenser comprising Composition B, and adispenser comprising C were evaluated for their ability to deliver aconsumer noticeable fragrance benefit as described below under ConsumerTest Protocol I. Composition A included a volatile solvent and afragrance, and is further described below in Example 2. Composition Bincluded water, and is further described below in Example 2. CompositionC included water, a suspending agent, and microcapsules encapsulating afragrance, and is further described below in Example 2. As shown inTable 2, panelists receiving a dose of Composition A and Composition Cattributed a significantly higher score at all time points tested ascompared to those panelists receiving a dose of Composition A andComposition B.

TABLE 2 Composition A/ Composition A/ Composition C Composition BOverall Scent 56 53 On application (8-10 am) 58 53 Lunchtime (12-1 pm)44 B 30 Afternoon (3-4 pm) 41 B 23 Evening (6-7 pm) 50 B 28 OverallRating 51 B 39 0 = Poor; 25 = Fair; 50 = Good; 75 = Very Good; 100 =Excellent.

Thus as shown in Table 2, microcapsules having a fracture strength from0.1 MPa to about 25.0 MPa can survive the spraying process and provide abenefit to the user. In this regard, a significant benefit from themicrocapsules was observed as little as 4 hours after application and aslong as 11 hours after application. These data suggest thatmicrocapsules with a fracture strength of from 0.1 MPa to about 25.0 MPaare resilient enough to survive a spraying process and are weak enoughto rupture and release the encapsulated fragrance during routine usage.

As shown in Table 2B, a dispenser comprising Composition A, a dispensercomprising Composition B, a dispenser comprising Composition C, and adispenser comprising Composition D were evaluated for their ability todeliver a consumer noticeable fragrance benefit as described below underConsumer Test Protocol I. Composition A included a volatile solvent anda fragrance, and is further described below in Example 2. Composition Bincluded water, and is further described below in Example 2. CompositionC included water, a suspending agent, and microcapsules encapsulating afragrance, and is further described below in Example 2. Composition Dincluded water, a suspending agent, and microcapsules encapsulating afragrance, and is further described below in Example 2.

Initially, the noticeability upon application of all three Groups wasabout the same. As shown in Table 2B, after 4-5 hours from application(i.e. 12-fpm) and 7-8 hours after application (i.e. 3-4 pm), Group IIIis significantly more noticeable than Groups I or II. After 10-11 hoursfrom application (i.e. 6-7 pm), Group III is significantly morenoticeable than Group I. These data suggest that the fracture strengthof the particle may influence the noticeability of the encapsulatedfragrance. Surprisingly, a low fracture strength of 1.55 MPa ispreferred over a high fracture strength of 6.83 MPa, in the earlier partof the day although both the low and high fracture strengthmicrocapsules outperformed the control that did not containmicrocapsules. At a later stage in the day, both low and high fracturestrength particles are equally preferred over the control that did notcontain microcapsules.

TABLE 2B Group I: Group II: Group III: Composition CompositionComposition A & B A & C A & D Microcapsules' NA 6.83 MPa 1.55 MPaFracture Strength Overall experience 31 45 59** Overall noticeability 2534 50*  Noticeability on 94 94 93  application (8-9 am) Noticeability at12-1 43 52 68** pm Noticeability at 3-4 23  42* 58** pm Noticeability at6-7 18  33* 36*  pm *denotes significance as compared to Group I**denotes significance as compared to Group I & II

It has also surprisingly been observed that microcapsules having amedian volume-weighted particle size of from 10 microns to 20 micronsmay deliver improved noticeability over microcapsules of other sizeswhen said microcapsules are sprayed.

Compositions Volatile Solvents

The compositions described herein may include a volatile solvent or amixture of volatile solvents. The volatile solvents may comprise greaterthan 10%, greater than 30%, greater than 40%, greater than 50%, greaterthan 60%, greater than 70%, or greater than 90%, by weight of thecomposition. The volatile solvents useful herein may be relativelyodorless and safe for use on human skin. Suitable volatile solvents mayinclude C₁-C₄ alcohols and mixtures thereof. Some non-limiting examplesof volatile solvents include ethanol, methanol, propanol, isopropanol,butanol, and mixtures thereof. In some examples, the composition maycomprise from 0.01% to 98%, by weight of the composition, of ethanol.

Nonvolatile Solvents

The composition may comprise a nonvolatile solvent or a mixture ofnonvolatile solvents. Non-limiting examples of nonvolatile solventsinclude benzyl benzoate, diethyl phthalate, isopropyl myristate,propylene glycol, dipropylene glycol, triethyl citrate, and mixturesthereof.

Fragrances

The composition may comprise a fragrance. As used herein, “fragrance” isused to indicate any odoriferous material or a combination ofingredients including at least one odoriferous material. Any fragrancethat is cosmetically acceptable may be used in the composition. Forexample, the fragrance may be one that is a liquid or solid at roomtemperature. Generally, the non-encapsulated fragrance(s) may be presentat a level from about 0.001% to about 40%, from about 0.1% to about 25%,from about 0.25% to about 20%, or from about 0.5% to about 15%, byweight of the composition. Some fragrances can be considered to bevolatiles and other fragrances can be considered to be or non-volatiles,as described and defined herein.

A wide variety of chemicals are known as fragrances, non-limitingexamples of which include alcohols, aldehydes, ketones, ethers, Schiffbases, nitriles, and esters. More commonly, naturally occurring plantand animal oils and exudates comprising complex mixtures of variouschemical components are known for use as fragrances. Non-limitingexamples of the fragrances useful herein include pro-fragrances such asacetal pro-fragrances, ketal pro-fragrances, ester pro-fragrances,hydrolyzable inorganic-organic pro-fragrances, and mixtures thereof. Thefragrances may be released from the pro-fragrances in a number of ways.For example, the fragrance may be released as a result of simplehydrolysis, or by a shift in an equilibrium reaction, or by a pH-change,or by enzymatic release. The fragrances herein may be relatively simplein their chemical make-up, comprising a single chemical, or may comprisehighly sophisticated complex mixtures of natural and synthetic chemicalcomponents, all chosen to provide any desired odor.

The fragrances may have a boiling point (BP) of about 500° C. or lower,about 400° C. or lower, or about 350° C. or lower. The BP of manyfragrances are disclosed in Perfume and Flavor Chemicals (AromaChemicals), Steffen Arctander (1969). The ClogP value of the individualfragrance materials may be about −0.5 or greater. As used herein,“ClogP” means the logarithm to the base 10 of the octanol/waterpartition coefficient. The ClogP can be readily calculated from aprogram called “CLOGP” which is available from Daylight ChemicalInformation Systems Inc., Irvine Calif., USA or calculated usingAdvanced Chemistry Development (ACD/Labs) Software V11.02 (© 1994-2014ACD/Labs). Octanol/water partition coefficients are described in moredetail in U.S. Pat. No. 5,578,563.

Examples of suitable aldehyde include but are not limited to:alpha-Amylcinnamaldehyde, Anisic Aldehyde, Decyl Aldehyde, Lauricaldehyde, Methyl n-Nonyl acetaldehyde, Methyl octyl acetaldehyde,Nonylaldehyde, Benzenecarboxaldehyde, Neral, Geranial, 2, 6octadiene,1,1 diethoxy-3,7dimethyl-, 4-Isopropylbenzaldehyde,2,4-Dimethyl-3-cyclohexene-1-carboxaldehyde,alpha-Methyl-p-isopropyldihydrocinnamaldehyde, 3-(3-isopropylphenyl)butanal, alpha-Hexylcinnamaldehyde, 7-Hydroxy-3,7-dimethyloctan-1-al,2,4-Dimethyl-3-Cyclohexene-1-carboxaldehyde, Octyl Aldehyde,Phenylacetaldehyde, 2,4-Dimethyl-3-Cyclohexene-1-carboxaldehyde,Hexanal, 3,7-Dimethyloctanal,6,6-Dimethylbicyclo[3.1.1]hept-2-ene-2-butanal, Nonanal, Octanal,2-Nonenal Undecenal,2-Methyl-4-(2,6,6-trimethyl-1-cyclohexenyl-1)-2-butenal,2,6-Dimethyloctanal3-(p-Isopropylphenyl)propionaldehyde,3-Phenyl-4-pentenal Citronellal, o/p-Ethyl-alpha,alpha-, 9-Decenal,dimethyldihydrocinnamaldehyde,p-Isobutyl-alpha-methylydrocinnamaldehyde, cis-4-Decen-1-al,2,5-Dimethyl-2-ethenyl-4-hexenal, trans-2-Methyl-2-butenal,3-Methylnonanal, alpha-Sinensal, 3-Phenylbutanal,2,2-Dimethyl-3-phenylpropionaldehyde,m-tert.Butyl-alpha-methyldihydrocinnamic aldehyde, Geranyloxyacetaldehyde, trans-4-Decen-1-al, Methoxycitronellal, and mixturesthereof.

Examples of suitable esters include but are not limited to: Allylcyclohexanepropionate, Allyl heptanoate, Allyl Amyl Glycolate, Allylcaproate, Amyl acetate (n-Pentyl acetate), Amyl Propionate, Benzylacetate, Benzyl propionate, Benzyl salicylate, cis-3-Hexenylacetate,Citronellyl acetate, Citronellyl propionate, Cyclohexyl salicylate,Dihydro Isojasmonate Dimethyl benzyl carbinyl acetate, Ethyl acetate,Ethyl acetoacetate, Ethyl Butyrate, Ethyl-2-methyl butryrate,Ethyl-2-methyl pentanoate Fenchyl acetate (1,3,3-Trimethyl-2-norbornanylacetate), Tricyclodecenyl acetate, Tricyclodecenyl propionate, Geranylacetate, cis-3-Hexenyl isobutyrate, Hexyl acetate, cis-3-Hexenylsalicylate, n-Hexyl salicylate, Isobornyl acetate, Linalyl acetate,p-t-Butyl Cyclohexyl acetate, (−)-L-Menthyl acetate, o-t-Butylcyclohexylacetate), Methyl benzoate, Methyl dihydro iso jasmonate,alpha-Methylbenzyl acetate, Methyl salicylate, 2-Phenylethyl acetate,Prenyl acetate, Cedryl acetate, Cyclabute, Phenethyl phenylacetate,Terpinyl formate, Citronellyl anthranilate, Ethyltricyclo[5.2.1.0-2,6]decane-2-carboxylate, n-Hexyl ethyl acetoacetate,2-tert.-Butyl-4-methyl-cyclohexyl acetate, Formic acid,3,5,5-trimethylhexyl ester, Phenethyl crotonate, Cyclogeranyl acetate,Geranyl crotonate, Ethyl geranate, Geranyl isobutyrate, Ethyl2-nonynoate2,6-Octadienoic acid, 3,7-dimethyl-, methyl ester,Citronellyl valerate, 2-Hexenylcyclopentanone, Cyclohexyl anthranilate,L-Citronellyl tiglate, Butyl tiglate, Pentyl tiglate, Geranyl caprylate,9-Decenyl acetate,2-Isopropyl-5-methylhexyl-1 butyrate, n-Pentylbenzoate, 2-Methylbutyl benzoate (mixture with pentyl benzoate),Dimethyl benzyl carbinyl propionate, Dimethyl benzyl carbinyl acetate,trans-2-Hexenyl salicylate, Dimethyl benzyl carbinyl isobutyrate,3,7-Dimethyloctyl formate, Rhodinyl formate, Rhodinyl isovalerate,Rhodinyl acetate, Rhodinyl butyrate, Rhodinyl propionate,Cyclohexylethyl acetate, Neryl butyrate, Tetrahydrogeranyl butyrate,Myrcenyl acetate, 2,5-Dimethyl-2-ethenylhex-4-enoic acid, methyl ester,2,4-Dimethylcyclohexane-1-methyl acetate, Ocimenyl acetate, Linalylisobutyrate, 6-Methyl-5-heptenyl-1 acetate, 4-Methyl-2-pentyl acetate,n-Pentyl 2-methylbutyrate, Propyl acetate, Isopropenyl acetate,Isopropyl acetate, 1-Methylcyclohex-3-enecarboxylic acid, methyl ester,Propyl tiglate, Propyl/isobutyl cyclopent-3-enyl-1-acetate(alpha-vinyl), Butyl 2-furoate, Ethyl 2-pentenoate, (E)-Methyl3-pentenoate, 3-Methoxy-3-methylbutyl acetate, n-Pentyl crotonate,n-Pentyl isobutyrate, Propyl formate, Furfuryl butyrate, Methylangelate, Methyl pivalate, Prenyl caproate, Furfuryl propionate, Diethylmalate, Isopropyl 2-methylbutyrate, Dimethyl malonate, Bornyl formate,Styralyl acetate, 1-(2-Furyl)-1-propanone, 1-Citronellyl acetate,3,7-Dimethyl-1,6-nonadien-3-yl acetate, Neryl crotonate, Dihydromyrcenylacetate, Tetrahydromyrcenyl acetate, Lavandulyl acetate, 4-Cyclooctenylisobutyrate, Cyclopentyl isobutyrate, 3-Methyl-3-butenyl acetate, Allylacetate, Geranyl formate, cis-3-Hexenyl caproate, and mixtures thereof.

Examples of suitable alcohols include but are not limited to: Benzylalcohol, beta-gamma-Hexenol (2-Hexen-1-ol), Cedrol, Citronellol,Cinnamic alcohol, p-Cresol, Cumic alcohol, Dihydromyrcenol,3,7-Dimethyl- 1-octanol, Dimethyl benzyl carbinol, Eucalyptol, Eugenol,Fenchyl alcohol, Geraniol, Hydratopic alcohol, Isononyl alcohol(3,5,5-Trimethyl-1-hexanol), Linalool, Methyl Chavicol (Estragole),Methyl Eugenol (Eugenyl methyl ether), Nerol, 2-Octanol, Patchoulialcohol, Phenyl Hexanol (3-Methyl-5-phenyl-1-pentanol), Phenethylalcohol, alpha-Terpineol, Tetrahydrolinalool, Tetrahydromyrcenol,4-methyl-3decen-5-ol, 1-3,7-Dimethyloctane-1-ol,2-(Furfuryl-2)-heptanol, 6,8-Dimethyl-2-nonanol, Ethyl norbornylcyclohexanol, beta-Methyl cyclohexane ethanol,3,7-Dimethyl-(2),6-octen(adien)-1-ol, trans-2-Undecen-1-ol2-Ethyl-2-prenyl-3-hexenol, Isobutyl benzyl carbinol, Dimethyl benzylcarbinol, Ocimenol, 3,7-Dimethyl-1,6-nonadien-3-ol (cis & trans),Tetrahydromyrcenol, alpha-Terpineol, 9-Decenol-1, 2(Hexenyl)cyclopentanol, 2,6-Dimethyl-2-heptanol, 3-Methyl-1-octen-3-ol,2,6-Dimethyl-5-hepten-2-ol, 3,7,9-Trimethyl-1,6-decadien-3-ol,3,7-Dimethyl-6-nonen-1-ol, 3,7-Dimethyl-1-octyn-3-ol, 2,6-Dimethyl-1,5,7-octatrienol-3, Dihydromyrcenol, 2,6,10-Trimethyl-5,9-undecadienol,2,5-Dimethyl-2-propylhex-4-enol-1,(Z),3-Hexenol,o,m,p-Methyl-phenylethanol, 2-Methyl-5-phenyl-1-pentanol,3-Methylphenethyl alcohol, para-Methyl dimethyl benzyl carbinol, Methylbenzyl carbinol, p-Methylphenylethanol, 3,7-Dimethyl-2-octen-1-ol,2-Methyl-6-methylene-7-octen-4-ol, and mixtures thereof.

Examples of ketones include but are not limited to:Oxacycloheptadec-10-en-2-one, Benzylacetone, Benzophenone, L-Carvone,cis-Jasmone, 4-(2,6,6-Trimethyl-3-cyclohexen-1-yl)-but-3-en-4-one, Ethylamyl ketone, alpha-Ionone, Ionone Beta, Ethanone,Octahydro-2,3,8,8-tetramethyl-2-acetonaphthalene, alpha-Irone,1-(5,5-Dimethyl-1-cyclohexen-1-yl)-4-penten-1-one, 3-Nonanone, Ethylhexyl ketone, Menthone, 4-Methylacetophenone, gamma-Methyl Ionone Methylpentyl ketone, Methyl Heptenone (6-Methyl-5-hepten-2-one), Methyl Heptylketone, Methyl Hexyl ketone, delta Muscenone, 2-Octanone,2-Pentyl-3-methyl-2-cyclopenten-1-one, 2-Heptylcyclopentanone,alpha-Methylionone, 3-Methyl-2-(trans-2-pentenyl)-cyclopentenone,Octenyl cyclopentanone, n-Amylcyclopentenone,6-Hydroxy-3,7-dimethyloctanoic acid lactone,2-Hydroxy-2-cyclohexen-1-one, 3-Methyl-4-phenyl-3-buten-2-one,2-Pentyl-2,5,5-trimethylcyclopentanone, 2-Cyclopentylcyclopentanol-1,5-Methylhexan-2-one, gamma-Dodecalactone, delta-Dodecalactonedelta-Dodecalactone, gamma-Nonalactone, delta-Nonalactone,gamma-Octalactone, delta-Undecalactone, gamma-Undecalactone, andmixtures thereof.

Examples of ethers include but are not limited to: p-Cresyl methylether,4,6,6,7,8,8-Hexamethyl-1,3,4,6,7,8-hexahydro-cyclopenta(G)-2-benzopyran,beta-Naphthyl methyl ether, Methyl Iso Butenyl Tetrahydro Pyran,(Phantolide) 5-Acetyl-1,1,2,3,3,6 hexamethylindan, (Tonalid)7-Acetyl-1,1,3,4,4,6-hexamethyltetralin, 2-Phenylethyl3-methylbut-2-enyl ether, Ethyl geranyl ether, Phenylethyl isopropylether, and mixtures thereof.

Examples of alkenes include but are not limited to: Allo-Ocimene,Camphene, beta-Caryophyllene, Cadinene, Diphenylmethane, d-Limonene,Lymolene, beta-Myrcene, Para-Cymene, alpha-Pinene, beta-Pinene,alpha-Terpinene, gamma-Terpinene, Terpineolene,7-Methyl-3-methylene-1,6-octadiene, and mixtures thereof.

Examples of nitriles include but are not limited to:3,7-Dimethyl-6-octenenitrile, 3,7-Dimethyl-2(3), 6-nonadienenitrile,(2E, 6Z) 2,6-nonadienenitrile, n-dodecane nitrile, and mixtures thereof.

Examples of Schiffs Bases include but are not limited to: Citronellylnitrile, Nonanal/methyl anthranilate, Anthranilic acid, N-octylidene-,methyl ester(L)-, Hydroxycitronellal/methyl anthranilate, 2-Methyl-3-(4-Cyclamen aldehyde/methyl anthranilate, methoxyphenyl propanal/Methylanthranilate, Ethyl p-aminobenzoate/hydroxycitronellal, Citral/methylanthranilate, 2,4-Dimethylcyclohex-3-enecarbaldehyde methylanthranilate, Hydroxycitronellal-indole, and mixtures thereof.

Non-limiting examples of fragrances include fragrances such as musk oil,civet, castoreum, ambergris, plant fragrances such as nutmeg extract,cardomon extract, ginger extract, cinnamon extract, patchouli oil,geranium oil, orange oil, mandarin oil, orange flower extract,cedarwood, vetyver, lavandin, ylang extract, tuberose extract,sandalwood oil, bergamot oil, rosemary oil, spearmint oil, peppermintoil, lemon oil, lavender oil, citronella oil, chamomille oil, clove oil,sage oil, neroli oil, labdanum oil, eucalyptus oil, verbena oil, mimosaextract, narcissus extract, carrot seed extract, jasmine extract,olibanum extract, rose extract, and mixtures thereof.

Carriers

When the composition contains microcapsules, the composition may includea carrier for the microcapsules. Non-limiting examples of carriersinclude water, silicone oils like silicone D5, and other oils likemineral oil, isopropyl myristate, and fragrance oils.

The compositions containing microcapsules may include about 0.1% toabout 95%, from about 5% to about 95%, or from 5% to 75%, by weight ofthe composition, of the carrier. When the composition contains avolatile solvent, the composition may include from about 0.01% to about40%, from about 0.1% to about 30%, or from about 0.1% to about 20%, byweight of the composition, of water.

In some examples, when a first composition containing a volatile solventand a second composition containing microcapsules are sprayed, the dosecontaining the mixture of the first and second compositions may containabout 0.01% to about 75%, from about 1% to about 60%, from about 0.01%to about 60%, or from about 5% to about 50%, by weight of thecomposition, of water.

Encapsulates

The compositions herein may include microcapsules. The microcapsules maybe any kind of microcapsule disclosed herein or known in the art. Themicrocapsules may have a shell and a core material encapsulated by theshell. The core material of the microcapsules may include one or morefragrances. The shells of the microcapsules may be made from syntheticpolymeric materials or naturally-occurring polymers. Synthetic polymerscan be derived from petroleum oil, for example. Non-limiting examples ofsynthetic polymers include nylon, polyethylenes, polyamides,polystyrenes, polyisoprenes, polycarbonates, polyesters, polyureas,polyurethanes, polyolefins, polysaccharides, epoxy resins, vinylpolymers, polyacrylates, and mixtures thereof. Non-limiting examples ofsuitable shell materials include materials selected from the groupconsisting of reaction products of one or more amines with one or morealdehydes, such as urea cross-linked with formaldehyde orgluteraldehyde, melamine cross-linked with formaldehyde;gelatin-polyphosphate coacervates optionally cross-linked withgluteraldehyde; gelatin-gum Arabic coacervates; cross-linked siliconefluids; polyamine reacted with polyisocyanates; acrylate monomerspolymerized via free radical polymerization, and mixtures thereof.Natural polymers occur in nature and can often be extracted from naturalmaterials. Non-limiting examples of naturally occurring polymers aresilk, wool, gelatin, cellulose, proteins, and combinations thereof.

The microcapsules may be friable microcapsules. A friable microcapsuleis configured to release its core material when its shell is ruptured.The rupture can be caused by forces applied to the shell duringmechanical interactions. The microcapsules may have a median volumeweighted fracture strength of from about 0.1 MPa to about 25.0 MPa, whenmeasured according to the Fracture Strength Test Method, or anyincremental value expressed in 0.1 mega Pascals in this range, or anyrange formed by any of these values for fracture strength. As anexample, the microcapsules may have a median volume weighted fracturestrength of 0.5-25.0 mega Pascals (MPa), alternatively from 0.5-20.0mega Pascals (MPa), 0.5-15.0 mega Pascals (MPa), 0.5-10.0 mega Pascals(MPa), or alternatively from 1.0-8.0 mega Pascals (MPa).

The microcapsules may have a median volume-weighted particle size offrom 2 microns to 80 microns, from 10 microns to 30 microns, or from 10microns to 20 microns, as determined by the Test Method for DeterminingMedian Volume-Weighted Particle Size of Microcapsules described herein.

The microcapsules may have various core material to shell weight ratios.The microcapsules may have a core material to shell ratio that isgreater than or equal to: 10% to 90%, 30% to 70%, 50% to 50%, 60% to40%, 70% to 30%, 75% to 25%, 80% to 20%, 85% to 15%, 90% to 10%, 95% to5%, 98% to 2%.

The microcapsules may have shells made from any material in any shapeand configuration known in the art. Some or all of the shells mayinclude a polyacrylate material, such as a polyacrylate randomcopolymer. For example, the polyacrylate random copolymer can have atotal polyacrylate mass, which includes ingredients selected from thegroup including: amine content of 0.2-2.0% of total polyacrylate mass;carboxylic acid of 0.6-6.0% of total polyacrylate mass; and acombination of amine content of 0.1-1.0% and carboxylic acid of 0.3-3.0%of total polyacrylate mass.

When a microcapsule's shell includes a polyacrylate material, thepolyacrylate material may form 5-100% of the overall mass, or anyinteger value for percentage in this range, or any range formed by anyof these values for percentage, of the shell. As examples, thepolyacrylate material may form at least 5%, at least 10%, at least 25%,at least 33%, at least 50%, at least 70%, or at least 90% of the overallmass of the shell.

The microcapsules may have various shell thicknesses. The microcapsulesmay have a shell with an overall thickness of 1-2000 nanometers, or anyinteger value for nanometers in this range, or any range formed by anyof these values for thickness. As a non-limiting example, themicrocapsules may have a shell with an overall thickness of 2-1100nanometers.

The microcapsules may also encapsulate one or more benefit agents. Thebenefit agent(s) include, but are not limited to, one or more ofchromogens, dyes, cooling sensates, warming sensates, fragrances, oils,pigments, in any combination. When the benefit agent includes afragrance, said fragrance may comprise from about 2% to about 80%, fromabout 20% to about 70%, from about 30% to about 60% of a perfume rawmaterial with a ClogP greater than −0.5, or even from about 0.5 to about4.5. In some examples, the fragrance encapsulated may have a ClogP ofless than 4.5, less than 4, or less than 3. In some examples, themicrocapsule may be anionic, cationic, zwitterionic, or have a neutralcharge. The benefit agents(s) can be in the form of solids and/orliquids. The benefit agent(s) include any kind of fragrance(s) known inthe art, in any combination.

The microcapsules may encapsulate an oil soluble material in addition tothe benefit agent. Non-limiting examples of the oil soluble materialinclude mono, di- and tri-esters of C₄-C₂₄ fatty acids and glycerine;isopropryl myristate, soybean oil, hexadecanoic acid, methyl ester,isododecane, and combinations thereof, in addition to the encapsulatedbenefit agent. The oil soluble material may have a ClogP about 4 orgreater, at least 4.5 or greater, at least 5 or greater, at least 7 orgreater, or at least 11 or greater.

The microcapsule's shell may comprise a reaction product of a firstmixture in the presence of a second mixture comprising an emulsifier,the first mixture comprising a reaction product of i) an oil soluble ordispersible amine with ii) a multifunctional acrylate or methacrylatemonomer or oligomer, an oil soluble acid and an initiator, theemulsifier comprising a water soluble or water dispersible acrylic acidalkyl acid copolymer, an alkali or alkali salt, and optionally a waterphase initiator. In some examples, said amine is an aminoalkyl acrylateor aminoalkyl methacrylate.

The microcapsules may include a core material and a shell surroundingthe core material, wherein the shell comprises: a plurality of aminemonomers selected from the group consisting of aminoalkyl acrylates,alkyl aminoalkyl acrylates, dialkyl aminoalykl acrylates, aminoalkylmethacrylates, alkylamino aminoalkyl methacrylates, dialkyl aminoalyklmethacrylates, tertiarybutyl aminethyl methacrylates, diethylaminoethylmethacrylates, dimethylaminoethyl methacrylates, dipropylaminoethylmethacrylates, and mixtures thereof; and a plurality of multifunctionalmonomers or multifunctional oligomers.

Non-limiting examples of microcapsules include microcapsules thatcomprise a shell comprising an amine selected from the group consistingof diethylaminoethyl methacrylate, dimethylaminoethyl methacrylate,tertiarybutyl aminoethyl methacrylate; and combinations thereof; a corematerial encapsulated by said shell, said core material comprising about10% to about 60% of a material selected from the group consisting ofmono, di- and tri-esters of C₄-C₂₄ fatty acids and glycerine; isoproprylmyristate, soybean oil, hexadecanoic acid, methyl ester, isododecane,and combinations thereof, by weight of the microcapsule; and about 10%to about 90% of a perfume material, by weight of the microcapsule;wherein said microcapsules have a volume weighted fracture strength from0.1 MPa to 25 MPa, preferably from 0.8 MPa to 20 MPa, more preferablyfrom 1.0 MPa to 15 MPa; wherein said microcapsules have a medianvolume-weighted particle size from 10 microns to 30 microns.

Processes for making microcapsules are well known. Various processes formicroencapsulation, and exemplary methods and materials, are set forthin U.S. Pat. No. 6,592,990; U.S. Pat. No. 2,730,456; U.S. Pat. No.2,800,457; U.S. Pat. No. 2,800,458; U.S. Pat. No. 4,552,811; and U.S.2006/0263518 A1.

The microcapsule may be spray-dried to form spray-dried microcapsules.The composition may also contain one or more additional delivery systemsfor providing one or more benefit agents, in addition to themicrocapsules. The additional delivery system(s) may differ in kind fromthe microcapsules. For example, wherein the microcapsule are friable andencapsulate a fragrance, the additional delivery system may be anadditional fragrance delivery system, such as a moisture-triggeredfragrance delivery system. Non-limiting examples of moisture-triggeredfragrance delivery systems include cyclic oligosaccaride, starch (orother polysaccharide material), starch derivatives, and combinationsthereof.

The compositions may also include a parent fragrance and one or moreencapsulated fragrances that may or may not differ from the parentfragrance. For example, the composition may include a parent fragranceand a non-parent fragrance. A parent fragrance refers to a fragrancethat is dispersed throughout the composition and is typically notencapsulated when added to the composition. Herein, a non-parentfragrance refers to a fragrance that differs from a parent fragrance andis encapsulated with an encapsulating material prior to inclusion into acomposition. Non-limiting examples of differences between a fragranceand a non-parent fragrance include differences in chemical make-up.

Suspending Agents

The compositions described herein may include one or more suspendingagents to suspend the microcapsules and other water-insoluble materialdispersed in the composition. The concentration of the suspending agentmay range from about 0.01% to about 90%, alternatively from about 0.01%to about 15% by weight of the composition, alternatively from about 0.1%to about 5%.

Non-limiting examples of suspending agents include anionic polymers,cationic polymers, and nonionic polymers. Non-limiting examples of saidpolymers include vinyl polymers such as cross linked acrylic acidpolymers with the CTFA name Carbomer, cellulose derivatives and modifiedcellulose polymers such as methyl cellulose, ethyl cellulose,hydroxyethyl cellulose, hydroxypropyl methyl cellulose, nitro cellulose,sodium cellulose sulfate, sodium carboxymethyl cellulose, crystallinecellulose, cellulose powder, polyvinylpyrrolidone, polyvinyl alcohol,guar gum, hydroxypropyl guar gum, xanthan gum, arabia gum, tragacanth,galactan, carob gum, guar gum, karaya gum, carrageenan, pectin, agar,quince seed (Cydonia oblonga Mill), starch (rice, corn, potato, wheat),algae colloids (algae extract), microbiological polymers such asdextran, succinoglucan, pulleran, starch-based polymers such ascarboxymethyl starch, methylhydroxypropyl starch, alginic acid-basedpolymers such as sodium alginate and alginic acid, propylene glycolesters, acrylate polymers such as sodium polyacrylate,polyethylacrylate, polyacrylamide, and polyethyleneimine, and inorganicwater soluble material such as bentonite, aluminum magnesium silicate,laponite, hectonite, and anhydrous silicic acid. Other suspending agentsmay include, but are not limited to, Konjac, Gellan, and a methyl vinylether/maleic anhydride copolymer crosslinked with decadiene (e.g.Stabileze®).

Other non-limiting examples of suspending agents include cross-linkedpolyacrylate polymers like Carbomers with the trade names Carbopol® 934,Carbopol® 940, Carbopol® 950, Carbopol® 980, Carbopol® 981, Carbopol®Ultrez 10, Carbopol® Ultrez 20, Carbopol® Ultrez 21, Carbopol® Ultrez30, Carbopol® ETD2020, Carbopol® ETD2050, Pemulen® TR-1, and Pemulen®TR-2, available from The Lubrizol Corporation; acrylates/steareth-20methacrylate copolymer with trade name ACRYSOL™ 22 available from Rohmand Hass; acrylates/beheneth-25 methacrylate copolymers, trade namesincluding Aculyn-28 available from Rohm and Hass, and Volarest™ FLavailable from Croda; nonoxynyl hydroxyethylcellulose with the tradename Amercell™ POLYMER HM-1500 available from Amerchol; methylcellulosewith the trade name BENECEL®, hydroxyethyl cellulose with the trade nameNATROSOL®; hydroxypropyl cellulose with the trade name KLUCEL®; cetylhydroxyethyl cellulose with the trade name POLYSURF® 67, supplied byHercules; ethylene oxide and/or propylene oxide based polymers with thetrade names CARBOWAX® PEGs, POLYOX WASRs, and UCON® FLUIDS, all suppliedby Amerchol; ammonium acryloyldimethyltaurate/carboxyethyl-acrylate-crosspolymers like Aristoflex® TACcopolymer, ammonium acryloyl dimethyltaurate/VP copolymers likeAristoflex® AVS copolymer, sodium acryloyl dimethyltaurate/VPcrosspolymers like Aristoflex® AVS copolymer, ammonium acryloyldimethyltaurate/beheneth-25 methacrylate crosspolymers like Aristoflex®BVL or HMB, all available from Clariant Corporation; polyacrylatecrosspoylmer-6 with the trade name Sepimax™ Zen, available from Seppic;and cross-linked copolymers of vinyl pyrrolidone and acrylic acid suchas UltraThix™ P-100 polymer available from Ashland.

Other non-limiting examples of suspending agents include crystallinesuspending agents which can be categorized as acyl derivatives, longchain amine oxides, and mixtures thereof.

Other non-limiting examples of suspending agents include ethylene glycolesters of fatty acids, in some aspects those having from about 16 toabout 22 carbon atoms; ethylene glycol stearates, both mono anddistearate, in some aspects, the distearate containing less than about7% of the mono stearate; alkanol amides of fatty acids, having fromabout 16 to about 22 carbon atoms, or about 16 to 18 carbon atoms,examples of which include stearic monoethanolamide, stearicdiethanolamide, stearic monoisopropanolamide and stearicmonoethanolamide stearate; long chain acyl derivatives including longchain esters of long chain fatty acids (e.g., stearyl stearate, cetylpalmitate, etc.); long chain esters of long chain alkanol amides (e.g.,stearamide diethanolamide distearate, stearamide monoethanolamidestearate); and glyceryl esters (e.g., glyceryl distearate,trihydroxystearin, tribehenin), a commercial example of which is Thixin®R available from Rheox, Inc. Other non-limiting examples of suspendingagents include long chain acyl derivatives, ethylene glycol esters oflong chain carboxylic acids, long chain amine oxides, and alkanol amidesof long chain carboxylic acids.

Other non-limiting examples of suspending agents include long chain acylderivatives including N,N-dihydrocarbyl amido benzoic acid and solublesalts thereof (e.g., Na, K), particularly N,N-di(hydrogenated) C₁₆, C₁₈and tallow amido benzoic acid species of this family, which arecommercially available from Stepan Company (Northfield, Ill., USA).

Non-limiting examples of suitable long chain amine oxides for use assuspending agents include alkyl dimethyl amine oxides (e.g., stearyldimethyl amine oxide).

Other non-limiting suitable suspending agents include primary amineshaving a fatty alkyl moiety having at least about 16 carbon atoms,examples of which include palmitamine or stearamine, and secondaryamines having two fatty alkyl moieties each having at least about 12carbon atoms, examples of which include dipalmitoylamine ordi(hydrogenated tallow)amine. Other non-limiting examples of suspendingagents include di(hydrogenated tallow)phthalic acid amide, andcross-linked maleic anhydride-methyl vinyl ether copolymer.

Preservatives

Where the composition is aqueous, the compositions herein may include apreservative to prevent growth of unwanted micro-organisms. However,where microcapsules are in the aqueous phase, selection of thepreservative can be tricky as not all preservatives are compatible withthe microcapsules. Suitable preservatives which may be used withpolyacrylates microcapsules may include but are not limited to:parahydroxybenzoates or esters of parahydroxybenzoic acids and theirsalts, phenoxyethanol, benzoic acid, sodium benzoate, salicylic acid,sorbic acid and its salts, dehydroacetic acid, DMDM Hydantoin, andcombinations thereof.

Coloring Agents

The compositions herein may include a coloring agent. A coloring agentmay be in the form of a pigment. As used herein, the term “pigment”means a solid that reflects light of certain wavelengths while absorbinglight of other wavelengths, without providing appreciable luminescence.Useful pigments include, but are not limited to, those which areextended onto inert mineral(s) (e.g., talk, calcium carbonate, clay) ortreated with silicone or other coatings (e.g., to prevent pigmentparticles from re-agglomerating or to change the polarity(hydrophobicity) of the pigment. Pigments may be used to impart opacityand color. Any pigment that is generally recognized as safe (such asthose listed in C.T.F.A. cosmetic Ingredient Handbook, 3^(rd) Ed.,cosmetic and Fragrance Association, Inc., Washington, D.C. (1982),herein incorporated by reference) may be included in the compositionsdescribed herein. Non-limiting examples of pigments include bodypigment, inorganic white pigment, inorganic colored pigment, pearlingagent, and the like. Non-limiting examples of pigments include talc,mica, magnesium carbonate, calcium carbonate, magnesium silicate,aluminum magnesium silicate, silica, titanium dioxide, zinc oxide, rediron oxide, yellow iron oxide, black iron oxide, ultramarine,polyethylene powder, methacrylate powder, polystyrene powder, silkpowder, crystalline cellulose, starch, titanated mica, iron oxidetitanated mica, bismuth oxychloride, and the like. The aforementionedpigments can be used independently or in combination.

Other non-limiting examples of pigments include inorganic powders suchas gums, chalk, Fuller's earth, kaolin, sericite, muscovite, phlogopite,synthetic mica, lepidolite, biotite, lithia mica, vermiculite, aluminumsilicate, starch, smectite clays, alkyl and/or trialkyl aryl ammoniumsmectites, chemically modified magnesium aluminum silicate, organicallymodified montmorillonite clay, hydrated aluminum silicate, fumedaluminum starch octenyl succinate barium silicate, calcium silicate,magnesium silicate, strontium silicate, metal tungstate, magnesium,silica alumina, zeolite, barium sulfate, calcined calcium sulfate(calcined gypsum), calcium phosphate, fluorine apatite, hydroxyapatite,ceramic powder, metallic soap (zinc stearate, magnesium stearate, zincmyristate, calcium palmitate, and aluminum stearate), colloidal siliconedioxide, and boron nitride; organic powder such as polyamide resinpowder (nylon powder), cyclodextrin, methyl polymethacrylate powder,copolymer powder of styrene and acrylic acid, benzoguanamine resinpowder, poly(ethylene tetrafluoride) powder, and carboxyvinyl polymer,cellulose powder such as hydroxyethyl cellulose and sodium carboxymethylcellulose, ethylene glycol monostearate; inorganic white pigments suchas magnesium oxide. Non-limiting examples of pigments includenanocolorants from BASF and multi-layer interference pigments such asSicopearls from BASF. The pigments may be surface treated to provideadded stability of color and ease of formulation. Non-limiting examplesof pigments include aluminum, barium or calcium salts or lakes. Someother non-limiting examples of coloring agents include Red 3 AluminumLake, Red 21 Aluminum Lake, Red 27 Aluminum Lake, Red 28 Aluminum Lake,Red 33 Aluminum Lake, Yellow 5 Aluminum Lake, Yellow 6 Aluminum Lake,Yellow 10 Aluminum Lake, Orange 5 Aluminum Lake and Blue 1 AluminumLake, Red 6 Barium Lake, Red 7 Calcium Lake.

A coloring agent may also be a dye. Non-limiting examples include Red 6,Red 21, Brown, Russet and Sienna dyes, Yellow 5, Yellow 6, Red 33, Red4, Blue 1, Violet 2, and mixtures thereof. Other non-limiting examplesof dyes include fluorescent dyes like fluorescein.

Modulators & Co-Modulators

The first composition, when containing a volatile solvent, may alsocomprise at least one non-odorous modulator formed from an alkoxylatedglucoside, like methyl glucoside polyol, ethyl glucoside polyol, andpropyl glucoside polyol. The modulator can be a compound of formula (I):

wherein:

R¹ is hydrogen, alkyl, alkenyl or alkynyl;

R² is selected from hydrogen, alkyl, alkenyl, alkynyl,—[R⁶R⁷(R⁸)O]_(w)R⁹,wherein w is from 1 to 10, or 2 to 9;

R³ is selected from hydrogen, alkyl, alkenyl, alkynyl,—[R⁶R⁷(R⁸)O]_(x)R⁹,wherein y is from 1 to 10, or 2 to 9;

R⁴ is selected from hydrogen, alkyl, alkenyl, alkynyl,—[R⁶R⁷(R⁸)O]_(x)R⁹,wherein x is from 1 to 10, or 2 to 9;

R⁵ is selected from hydrogen, alkyl, alkenyl, alkynyl, —R⁶OR⁹,—R⁶O[R⁶R⁷(R⁸)O]_(z)R⁹, wherein z is from 1 to 10, or 2 to 9;

each R⁶ and R⁷ are independently selected from alkylene, alkenylene, oralkynylene; and

each R⁸ and R⁹ is independently selected from hydrogen or alkyl,

The sum of w, y, x and z can be, for example, equal to 4 to 40, 8 to 36,10 to 32, 10 to 28, or combinations thereof.

One exemplary modulator is Undecyl Glucoside and is available under thetradename Simulsol® SL 11 W from SEPPIC, France.

A modulator may also be a compound of formula (Ia):

The sum of w+x+y+z is, for example, equal to 4 to 40, 8 to 36, 10 to 32,10 to 28, or combinations thereof. Exemplary modulators of Formula Iacan include a PPG-10 Methyl Glucose Ether available under the tradenameGlucam™ P-10 or Ethoxylated Methyl Glucose Ether and is available underthe tradename Glucam™ E-20, respectively, from Lubrizol (USA), or aPPG-20 Methyl Glucose Ether, available under the tradename Glucam™ P-20from Lubrizol (USA).

A modulator can have a compound of formula (II):

wherein:

R¹⁰ is hydrogen, alkyl, alkenyl, or alkynyl;

each R¹¹ is independently selected from hydrogen, alkyl, alkenyl,alkynyl;

each R¹² is independently selected from hydrogen, alkyl, alkenyl, oralkynyl;

each R¹³ is independently selected from hydrogen, alkyl, alkenyl, oralkynyl;

each R¹⁴ is selected from alkylene, alkenylene, or alkynylene; and

R¹⁵ is hydrogen, alkyl, alkenyl, or alkynyl;

wherein t is 5 or less, like 1, 2, or 3.

An exemplary modulator of formula (II) is Caprylyl/Capryl Glucoside andis available under the tradename Plantacare® 810 UP from BASF,Ludwigshafen, Germany.

In another aspect, the first composition further comprises one or morenon-odorous fragrance co-modulators, selected from the group consistingof: Isocetyl alcohol (CERAPHYL® ICA); PPG-3 myristyl ether (likeTegosoft™ APM and/or Varonic® APM); Neopentyl glycol diethylhexanoate(like Schercemol™ NGDO); and mixtures thereof. PPG-3 myristyl ether iscommercialized by various suppliers including: Evonik-Goldschmidt underthe tradename Tegosoft™ APM; Degussa under the tradename Varonic® APM;International Speciality Products as a mixture of PPG-3 myristyl etherwith isocetyl alcohol; Lubrizol Advanced Materials (USA) as a mixture ofPPG-3 myristyl ether with neopentyl glycol diethylhexanoate under thetradename Schercemol™ NGDO ester; and combinations thereof. Suchcommercial forms of PPG-3 myristyl ether and mixtures thereof, areappropriate for use as co-modulators in the first composition.

In one example, least 50 wt % of the non-odorous fragrance modulator isPPG-20 Methyl Glucose Ether, with the remainder to 100 wt % possiblybeing one or more other modulators or co-modulators.

In yet another aspect, the first composition comprises one or morenon-odorous fragrance co-modulators selected from the group consistingof: Isocetyl alcohol (CERAPHYL® ICA); PPG-3 myristyl ether (preferablyTegosoft™ APM and/or Varonic® APM); Neopentyl glycol diethylhexanoate(preferably Schercemol™ NGDO); and mixtures thereof. Going further, thecomposition can be substantailly free of or free of non-odorousmodulators formed from an alkoxylated glucoside selected from the groupconsisting of methyl glucoside polyol, ethyl glucoside polyol and propylglucoside polyol.

Other Ingredients

The compositions may include other ingredients like antioxidants,ultraviolet inhibitors like sunscreen agents and physical sunblocks,cyclodextrins, quenchers, and/or skin care actives. Non-limitingexamples of other ingredients include 2-ethylhexyl-p-methoxycinnamate;hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate;4-tert-butyl-4′-methoxy dibenzoylmethane;2-hydroxy-4-methoxybenzo-phenone; 2-phenylbenzimidazole-5-sulfonic acid;octocrylene; zinc oxide; titanium dioxide; vitamins like vitamin C,vitamin B, vitamin A, vitamin E, and derivatives thereof; flavones andflavonoids; amino acids like glycine, tyrosine, etc.; carotenoids andcarotenes; chelating agents like EDTA, lactates, citrates, andderivatives thereof.

Dispenser

In some examples, the dispenser may include at least one dispensing endand at least two reservoirs. The dispenser may be such a size as toallow being handheld. The dispenser may also include at least two pumps,one for each reservoir. The dispenser may include a system for atomizingthe first and second compositions for spraying the compositions such asby including a swirl chamber. The dispenser containing the at least tworeservoirs may be configured to either mix the two compositions prior toexiting the dispenser or mix the two compositions in-flight (i.e. uponexit of the dispenser). Non-limiting examples of dispensers aredescribed in EP0775530B1, EP1633490, and below.

The dispenser may include a first composition stored in a firstreservoir and a second composition stored in the second reservoir. Thefirst composition may include a volatile solvent and a first fragrance.The second composition may include a plurality of microcapsules and acarrier (e.g. water). The second composition my further include asuspending agent. The first and second compositions may each furtherinclude any other ingredient listed herein unless such an ingredientnegatively affects the performance of the microcapsules. Non-limitingexamples of other ingredients include a coloring agent included in atleast one of the first and second compositions and at least onenon-encapsulated fragrance in the first composition. When the secondcomposition comprises microcapsules encapsulating a fragrance, thesecond compositions may further include a non-encapsulated fragrancethat may or may not differ from the encapsulated fragrance in chemicalmake-up. In some examples, the second composition may be substantiallyfree of a material selected from the group consisting of a propellant,ethanol, a detersive surfactant, and combinations thereof; preferablyfree of a material selected from the group consisting of a propellant,ethanol, a detersive surfactant, and combinations thereof. Non-limitingexamples of propellants include compressed air, nitrogen, inert gases,carbon dioxide, gaseous hydrocarbons like propane, n-butane, isobutene,cyclopropane, and mixtures thereof. In some examples, the firstcomposition may be substantially free of a material selected from thegroup consisting of a propellant, microcapsules, a detersive surfactant,and combinations thereof; preferably free of a material selected fromthe group consisting of propellant, microcapsules, a detersivesurfactant, and combinations thereof.

The dispenser may be designed to dispense a volume ratio of the firstcomposition to the second composition at a ratio from 10:1 to 1:10, from5:1 to 1:5, from 3:1 to 1:3, from 2:1 to 1:2, or even 1:1 to 2:1, whenthe first composition comprises a volatile solvent and the secondcomposition comprises a carrier and a plurality of microcapsules. Thedispenser may dispense a first dose of the first composition and asecond dose of the second composition such that the first dose and thesecond dose have a combined volume of from 30 microliters to 300microliters, alternatively from 50 microliters to 140 microliters,alternatively from 70 microliters to 130 microliters. At least some ofthe microcapsules included in such a dispenser may encapsulate afragrance. The fragrance encapsulated within the microcapsules may ormay not differ in chemical make-up from the non-encapsulated fragranceincluded with the volatile solvent.

As shown in FIG. 1 and FIG. 2, the dispenser 10 may have a housing 20,an actuator 30 and an exit orifice 40. In some non-limiting examples,the exit orifice may have a volume of 0.01 cubic millimeters to 0.20cubic millimeters, such as when the exit orifice 40 has a volume of 0.03cubic millimeters. In some examples, the housing 20 may not benecessary; a non-limiting example of which is when the reservoirs 50, 60are glass bottles (not shown). When the reservoirs are made of glass,the two reservoirs may be blown from the same piece of molten glass,appearing as a single bottle with two reservoirs. Alternatively, whenthe reservoirs are made of glass, the two reservoirs may be blown fromseparate pieces of molten glass, appearing as two bottles, each with asingle reservoir, and joined together via a connector. One of ordinaryskill in the art will appreciate that many possible designs of thereservoirs are possible without deviating from the teachings herein; anon-limiting example of which is a reservoir within a reservoir.

As shown in FIG. 3, the dispenser 10 may also contain a first reservoir50 for storing a first composition 61 and a second reservoir 60 forstoring a second composition 51. The reservoirs 50, 60 may be of anyshape or design. The dispenser may be configured to dispense a similarvolume ratio (e.g. 1:1) of the first composition 51 to the secondcomposition 61 as shown in FIG. 3. The first reservoir 50 may have anopen end 52 and a closed end 53. The second reservoir may have an openend 62 and a closed end 63. The open ends 52, 62 may be used, forexample, to insert the pumps, and/or dip tubes into the reservoirs. Theopen ends 52, 62 may also be used to supply the reservoirs with thecompositions. Once supplied, the open ends 52, 62 may be capped orotherwise sealed to prevent leakage from the reservoirs. In someexamples, the second composition 61 may include microcapsules 55. Thedispenser may include a first dip tube 70 and a second dip tube 80,although the dip tubes are not necessary if alternative means areprovided for airless communication between the reservoir and the pump, anon-limiting example of which is a delaminating bottle. The dispensermay include a first pump 90 (shown as a schematic) in communication withthe first dip tube 70. The dispenser may also include a second pump 100(shown as a schematic) in communication with the second dip tube 80. Theinner workings of the pumps are routine unless otherwise illustrated inthe drawings. Such inner workings have been abbreviated and shown asschematic so as to not detract from the inventions herein. Suitablepumps with outputs between 30 microliters to 140 microliter may beobtained from suppliers such as Aptargroup Inc., MeadWeastavo Corp., andAlbea. Some examples of suitable pumps are the pre-compression pumpsdescribed in WO2012110744, EP0757592, EP0623060. The first pump 90 mayhave a chamber 91 and the second pump 100 may have a chamber 101.

The dispenser may include a first channel 110 and a second channel 120.In some non-limiting examples, the channels 110, 120 have a volume of 5millimeters to 15 millimeters, an example of which is when the channelshave a volume of 8.4 cubic millimeters. The first channel 110 may have aproximal end 111 and a distal end 112. The second channel 120 may have aproximal end 121 and a distal end 122. The proximal end 111 of the firstchannel 110 is in communication with the exit tube 92 of the first pump90. The proximal end 121 of the second channel 120 is in communicationwith the exit tube 102 of the second pump 100. The first channel 110 maybe of a shorter length as compared to the second channel 120. The secondchannel 120 may be disposed above the first channel 110 as illustratedin FIG. 3 or below the first channel 110. Alternatively, the firstchannel and second channel may be substantially coplanar (i.e. existside-by-side). The exit tubes 92, 102 may have similar or differentdiameters which can provide for similar or different volumes. In somenon-limiting examples, the exit tubes have a diameter of 0.05millimeters to 3 millimeters, an example of which is when one of theexit tubes has a diameter of 1.4 millimeters and the other exit tube hasa diameter of 1 millimeter. In some non-limiting examples, the exittubes 92, 102 may have a volume of from 2 cubic millimeters to 10 cubicmillimeters, such as when one exit tube has a volume of 7.70 cubicmillimeters and the other exit tube as a volume of 3.93 cubicmillimeters.

The distal end 112 of the first channel 110 and the distal end 122 ofthe second channel 120 serve to deliver the compositions into the swirlchamber 130. The swirl chamber 130 may impart on the first composition51 and the second composition 61 a swirl motion. The swirl chamber maybe configured to deliver certain spray characteristics. For example, thefluid entering the swirl chamber may be provided a swirling or circularmotion or other shape of motion within the swirl chamber, thecharacteristics of the motion being driven by the inward design of theswirl chamber 130. Incorporation of a swirl chamber 130 may providesufficient atomization when compositions that vary in surface tensionand viscosity are present in the reservoirs. In some instances, themixing of the two compositions in the swirl chamber may lower thesurface tension of the compositions, and thereby, improve the level ofatomization of the liquids.

The dispenser may also be configured to dispense different ratios of thefirst composition 51 to the second composition 61. The dispenser mayalso be configured to contain a first pump and a second pump withdifferent output volumes. In some non-limiting examples, at least onepump may have an output of 70 microliters and the other pump may have anoutput of 50 microliters. As shown in FIG. 4, the first reservoir 50 maybe configured to hold a smaller volume than the second reservoir 150 orvice versa. If dip tubes are included, the first dip tube 70 may also beof a shorter length than the second dip tube 80 or vice versa.Alternatively, the reservoirs 50 and 60 could be the same size, whileunder filling the first reservoir 50. As shown in FIG. 4, the first pump90 and the second pump 100 may be configured so that the chambers 91,101 have different diameters while having the same or similar lengthsthat allow for the same or similar stroke lengths for the pistons.Alternatively, as illustrated in FIG. 5, the first pump 90 and secondpump 100 may be configured so that the chambers 91, 101 have differentlengths and similar or the same diameters. Such configurations maydeliver in series dispensing of a larger volume of either composition51, 61 by allowing for pistons of different sizes.

Alternatively, the first and second compositions may be stored indifferent dispensers and sprayed sequentially or concurrently. In thisregard, a first dispenser may be used to store and apply the firstcomposition which comprises a volatile solvent and a first fragrance. Asecond dispenser may then be used to store and apply the secondcomposition comprising a plurality of microcapsules and a carrier (e.g.water). The second composition my further include a suspending agent.The first and second compositions may each further include any otheringredient listed herein unless such an ingredient negatively affectsthe performance of the microcapsules. In this regard, a coloring agentmay be included in at least one of the first and second compositions. Insome examples, the second composition may be substantially free of amaterial selected from the group consisting of a propellant, ethanol, adetersive surfactant, and combinations thereof; preferably free of amaterial selected from the group consisting of a propellant, ethanol, adetersive surfactant, and combinations thereof. In some examples, thefirst composition may be substantially free of a material selected fromthe group consisting of a propellant, microcapsules, a detersivesurfactant, and combinations thereof; preferably free of a materialselected from the group consisting of propellant, microcapsules, adetersive surfactant, and combinations thereof.

Said first and second dispenser may be sold individually or as a kit,with or without written instructions instructing the user to apply thetwo compositions sequentially and/or concurrently. Non-limiting examplesof written instructions include: 1) instructing a user to spray a firstcomposition containing the volatile solvent and first fragrance and asecond composition containing the microcapsules sequentially, andoptionally, relatively in the same area; 2) instructing a user to spraya first composition containing the volatile solvent and first fragranceand a second composition containing the microcapsules sequentiallyconcurrently, and, optionally, relatively in the same area; and 3)instructing a user to spray a first composition containing the volatilesolvent and first fragrance and a second composition containing themicrocapsules and doing so while avoiding contact with the eyes and/orface. In some examples, a customer may be provided an assortment ofsecond dispensers that may vary by the design of the dispenser, the typeof microcapsule, the type of fragrance encapsulated by themicrocapsules, and combinations thereof for which to select for pairingwith the first dispenser containing the volatile solvent and firstfragrance.

Second Composition

In some examples, the second composition may include at least 50%, atleast 75%, or even at least 90%, by weight of the composition, of water;a plurality of microcapsules; and from about 0.01% to about 90%,preferably from about 0.01% to about 15%, more preferably from about0.1% to about 5%, by weight of the composition, of a suspending agent;wherein the composition is free of propellants, ethanol, and detersivesurfactants; wherein the microcapsules comprise a first fragrance and ashell that surrounds said first fragrance. In some examples, the secondcomposition may be substantially free of, or alternatively, free of awax, an antiperspirant, and combinations thereof. In some examples, thesecond composition may comprise about 20% or less, about 10% or less,about 7% or less, of the microcapsules. It is to be appreciated thatbecause the second composition is to be atomized, the concentration ofthe microcapsules in the second composition should not be so high as toprevent suitable atomization.

Method of Use

The compositions disclosed herein may be applied to one or more skinsurfaces and/or one or more mammalian keratinous tissue surfaces as partof a user's daily routine or regimen. Additionally or alternatively, thecompositions herein may be used on an “as needed” basis. The compositionmay be applied to any article, such as a textile, or any absorbentarticle including, but not limited to, feminine hygiene articles,diapers, and adult incontinence articles. For example, the compositionsmay be used as a body spray, feminine spray, adult incontinence spray,baby spray, fine fragrance spray, or other spray. The size, shape, andaesthetic design of the dispensers described herein may vary widely asmay the mechanical design of the dispenser. The compositions may beapplied simultaneously or sequentially, depending on the choice ofdispenser or dispensers.

Consumer Test Protocol I

Evaluations were conducted under controlled environmental conditions byan untrained panel using the following standardized procedures. 14-24untrained panelists participated in each evaluation. The panelists weresplit into two groups: Group A and Group B. Group A were treated with anarticle containing Composition A and an article containing Composition Bfor use during week 1. Group B were treated with an article containingComposition A and an article containing Composition C for use duringweek 1. Group A were treated with an article containing Composition Aand an article containing Composition C for use during week 2. Group Bwere treated with an article containing Composition A and an articlecontaining Composition B for use during week 1. Composition A,Composition B, and Composition C are described below.

Each article included a glass bottle for storing the composition and anAptar VP4 70 μl pump spray. Each article was sprayed approximately 10centimeters from the situs. On each application area, one 70 μl dose ofComposition A and one 70 μl dose of Composition B/C was sprayed on topof each other. The application areas consisted of two sites on theforearm and two sites on the neck.

At the end of each week, each panelist was provided a questionnairecontaining the following questions:

How would you rate the SCENT of the perfume at the following timepoints? (Please mark one box for each time point.)

Excel- Very Not able to lent Good Good Fair Poor smell any more OverallScent □ □ □ □ □ □ . . . just after □ □ □ □ □ □ it was applied on you . .. lunchtime □ □ □ □ □ □ (~12-1 pm) . . . afternoon □ □ □ □ □ □ (~3-4 pm). . . evening □ □ □ □ □ □ (~6-7 pm)

Overall Experience

Considering everything about the perfume you have tried today, pleaseindicate which of the following best describes your OVERALL OPINION OFTHE PERFUME EXPERIENCE? (Select one response)

Excellent Very Good Good Fair Poor □ □ □ □ □Noticeability questions were asked as follows:Please answer the following questions JUST AFTER THE PERFUME WAS APPLIEDON YOU.Please circle your choice

Which of the I am I get I get I have to I am not following bestcontinuously frequent occasional smell my aware of the describes theaware of the wafts of wafts of the skin to make perfume NOTICEABILITYperfume the perfume myself of the perfume? perfume aware of the perfume

For the noticeability questions (Application, lunchtime, afternoon andevening the coding was as follows:

0=I am not aware of the perfume; 25=I have to smell my skin to makemyself aware of the perfume; 50=I get occasional wafts of the perfume;75=I get frequent wafts of the perfume; 100=I am still continuously aware of the perfumeThe overall experience and overall noticeability was asked on a Poor toexcellent scale:

0=Poor; 25=Fair; 50=Good; 75=Very Good; 100=Excellent

At the end of week 1 and 2, the evaluations provided by each panelistwere recorded. The statistical test used was the Student T-Test (pairedsamples). The results of the questionnaire are illustrated in Table 2.An average score of 0 indicates that the panelists are no longer awareof the fragrance. A score of 25-49, indicates that the panelists cansmell their skin to make themselves aware of the fragrance. A score of50-74 indicates that the panelists received frequent wafts of thefragrance. A score of 75-100 indicates that the panelists werecontinuously aware of the fragrance. Referring to Table 2, theconfidence interval was 90% and the letter B corresponds to asignificant difference over Column B.

Test Methods

It is understood that the test methods that are disclosed in the TestMethods Section of the present application should be used to determinethe respective values of the parameters of Applicants' invention as suchinvention is described and claimed herein.

(1) Fracture Strength Test Method

One skilled in the art will recognize that various protocols may beconstructed for the extraction and isolation of microcapsules fromfinished products, and will recognize that such methods requirevalidation via a comparison of the resulting measured values, asmeasured before and after the microcapsules' addition to and extractionfrom the finished product. The isolated microcapsules are thenformulated in de-ionized (DI) water to form a slurry forcharacterization. It is to be understood that the fracture strength ofmicrocapsules extracted from a finished product may vary +/−15% from theranges described herein as the finished product may alter themicrocapsules' fracture strength over time.

To calculate the percentage of microcapsules which fall within a claimedrange of fracture strengths, three different measurements are made andtwo resulting graphs are utilized. The three separate measurements arenamely: i) the volume-weighted particle size distribution (PSD) of themicrocapsules; ii) the diameter of at least 10 individual microcapsuleswithin each of 3 specified size ranges, and; iii) the rupture-force ofthose same 30 or more individual microcapsules. The two graphs createdare namely: a plot of the volume-weighted particle size distributiondata collected at i) above; and a plot of the modeled distribution ofthe relationship between microcapsule diameter and fracture-strength,derived from the data collected at ii) and iii) above. The modelledrelationship plot enables the microcapsules within a claimed strengthrange to be identified as a specific region under the volume-weightedPSD curve, and then calculated as a percentage of the total area underthe curve.

-   a.) The volume-weighted particle size distribution (PSD) of the    microcapsules is determined via single-particle optical sensing    (SPOS), also called optical particle counting (OPC), using the    AccuSizer 780 AD instrument, or equivalent, and the accompanying    software CW788 version 1.82 (Particle Sizing Systems, Santa Barbara,    Calif., U.S.A.). The instrument is configured with the following    conditions and selections: Flow Rate=1 ml/sec; Lower Size    Threshold=0.50 pm; Sensor Model Number=LE400-05SE; Autodilution=On;    Collection time=120 sec; Number channels=512; Vessel fluid volume=50    ml; Max coincidence=9200. The measurement is initiated by putting    the sensor into a cold state by flushing with water until background    counts are less than 100. A sample of microcapsules in suspension is    introduced, and its density of particles is adjusted with DI water    as necessary via autodilution to result in particle counts of at    least 9200 per ml. During a time period of 120 seconds the    suspension is analyzed. The resulting volume-weighted PSD data are    plotted and recorded, and the values of the mean, 10^(th)    percentile, and 90^(th) percentile are determined.-   b.) The diameter and the rupture-force value (also known as the    bursting-force value) of individual microcapsules are measured via a    computer-controlled micromanipulation instrument system which    possesses lenses and cameras able to image the microcapsules, and    which possesses a fine, flat-ended probe connected to a    force-transducer (such as the Model 403A available from Aurora    Scientific Inc, Canada, or equivalent), as described in: Zhang, Z.    et al. (1999) “Mechanical strength of single microcapsules    determined by a novel micromanipulation technique.” J.    Microencapsulation, vol 16, no. 1, pages 117-124, and in: Sun, G.    and Zhang, Z. (2001) “Mechanical Properties of Melamine-Formaldehyde    microcapsules.” J. Microencapsulation, vol 18, no. 5, pages 593-602,    and as available at the University of Birmingham, Edgbaston,    Birmingham, UK.-   c.) A drop of the microcapsule suspension is placed onto a glass    microscope slide, and dried under ambient conditions for several    minutes to remove the water and achieve a sparse, single layer of    solitary particles on the dry slide. Adjust the concentration of    microcapsules in the suspension as needed to achieve a suitable    particle density on the slide. More than one slide preparation may    be needed.-   d.) The slide is then placed on a sample-holding stage of the    micromanipulation instrument. Thirty or more microcapsules on the    slide(s) are selected for measurement, such that there are at least    ten microcapsules selected within each of three pre-determined size    bands. Each size band refers to the diameter of the microcapsules as    derived from the Accusizer-generated volume-weighted PSD. The three    size bands of particles are: the Mean Diameter+/−2 μm; the 10^(th)    Percentile Diameter+/−2 pm; and the 90^(th) Percentile Diameter+/−2    μm. Microcapsules which appear deflated, leaking or damaged are    excluded from the selection process and are not measured.-   e.) For each of the 30 selected microcapsules, the diameter of the    microcapsule is measured from the image on the micromanipulator and    recorded. That same microcapsule is then compressed between two flat    surfaces, namely the flat-ended force probe and the glass microscope    slide, at a speed of 2 μm per second, until the microcapsule is    ruptured. During the compression step, the probe force is    continuously measured and recorded by the data acquisition system of    the micromanipulation instrument.-   f.) The cross-sectional area is calculated for each of the selected    microcapsules, using the diameter measured and assuming a spherical    particle (πr², where r is the radius of the particle before    compression). The rupture force is determined for each selected    particle from the recorded force probe measurements, as demonstrated    in Zhang, Z. et al. (1999) “Mechanical strength of single    microcapsules determined by a novel micromanipulation technique.” J.    Microencapsulation, vol 16, no. 1, pages 117-124, and in: Sun, G.    and Zhang Z. (2001) “Mechanical Properties of Melamine-Formaldehyde    microcapsules.” J. Microencapsulation, vol 18, no. 5, pages 593-602.-   g.) The Fracture Strength of each of the 30 or more microcapsules is    calculated by dividing the rupture force (in Newtons) by the    calculated cross-sectional area of the respective microcapsule.-   h.) On a plot of microcapsule diameter versus fracture-strength, a    Power Regression trend-line is fit against all 30 or more raw data    points, to create a modeled distribution of the relationship between    microcapsule diameter and fracture-strength.-   i.) The percentage of microcapsules which have a fracture strength    value within a specific strength range is determined by viewing the    modeled relationship plot to locate where the curve intersects the    relevant fracture-strength limits, then reading off the microcapsule    size limits corresponding with those strength limits. These    microcapsule size limits are then located on the volume-weighted PSD    plot and thus identify an area under the PSD curve which corresponds    to the portion of microcapsules falling within the specified    strength range.

The identified area under the PSD curve is then calculated as apercentage of the total area under the PSD curve. This percentageindicates the percentage of microcapsules falling with the specifiedrange of fracture strengths.

(2) ClogP

The “calculated log P” (C log P) is determined by the fragment approachof Hansch and Leo (cf., A. Leo, in Comprehensive Medicinal Chemistry,Vol. 4, C. Hansch, P. G. Sammens, J. B. Taylor, and c. A. Ramsden, Eds.P. 295, Pergamon Press, 1990, incorporated herein by reference). ClogPvalues may be calculated by using the “CLOGP” program available fromDaylight Chemical Information Systems Inc. of Irvine, Calif. U.S.A. orcalculated using Advanced Chemistry Development (ACD/Labs) SoftwareV11.02 (© 1994-2014 ACD/Labs).

(3) Boiling Point

Boiling point is measured by ASTM method D2887-04a, “Standard TestMethod for Boiling Range Distribution of Petroleum Fractions by GasChromatography,” ASTM International.

(4) Volume Weight Fractions

Volume weight fractions are determined via the method of single-particleoptical sensing (SPOS), also called optical particle counting (OPC).Volume weight fractions are determined via an AccuSizer 780/AD suppliedby Particle Sizing Systems of Santa Barbara Calif., U.S.A. orequivalent.

Procedure:

1) Put the sensor in a cold state by flushing water through the sensor.2) Confirm background counts are less than 100 (if more than 100,continue the flush).3) Prepare particle standard: pipette approx. 1 ml of shaken particlesinto a blender filled with approx. 2 cups of DI water. Blend it. Pipetteapprox. 1 ml of diluted, blended particles into 50 ml of DI water.4) Measure particle standard: pipette approx. 1 ml of double dilutedstandard into Accusizer bulb. Press the start measurement-Autodilutionbutton. Confirm particles counts are more than 9200 by looking in thestatus bar. If counts are less than 9200, press stop and 10 inject moresample.5) Immediately after measurement, inject one full pipette of soap (5%Micro 90) into bulb and press the Start Automatic Flush Cycles button.

(5) Test Method for Determining Median Volume-Weighted Particle Size ofMicrocapsules

One skilled in the art will recognize that various protocols may beconstructed for the extraction and isolation of microcapsules fromfinished products, and will recognize that such methods requirevalidation via a comparison of the resulting measured values, asmeasured before and after the microcapsules' addition to and extractionfrom the finished product. The isolated microcapsules are thenformulated in deionized water to form a capsule slurry forcharacterization for particle size distribution.

The median volume-weighted particle size of the microcapsules ismeasured using an Accusizer 780A, made by Particle Sizing Systems, SantaBarbara Calif., or equivalent. The instrument is calibrated from 0 to300 μm using particle size standards (as available fromDuke/Thermo-Fisher-Scientific Inc., Waltham, Mass., USA). Samples forparticle size evaluation are prepared by diluting about 1 g of capsuleslurry in about 5 g of de-ionized water and further diluting about 1 gof this solution in about 25 g of water. About 1 g of the most dilutesample is added to the Accusizer and the testing initiated using theautodilution feature. The Accusizer should be reading in excess of 9200counts/second. If the counts are less than 9200 additional sample shouldbe added. Dilute the test sample until 9200 counts/second and then theevaluation should be initiated. After 2 minutes of testing the Accusizerwill display the results, including the median volume-weighted particlesize.

EXAMPLES

The following examples are given solely for the purpose of illustrationand are not to be construed as limiting the invention, as manyvariations thereof are possible.

In the examples, all concentrations are listed as weight percent, unlessotherwise specified and may exclude minor materials such as diluents,filler, and so forth. The listed formulations, therefore, comprise thelisted components and any minor materials associated with suchcomponents. As is apparent to one of ordinary skill in the art, theselection of these minor materials will vary depending on the physicaland chemical characteristics of the particular ingredients selected tomake the present invention as described herein. Some examples areprovided below.

Example 1 Polyacrylate Microcapsule

Polyacrylate microcapsules having the characteristics displayed in Table3 below were prepared.

TABLE 3 Parameter Description Value Wall material Polyacrylate ShellCore Material Isopropyl Myristate content of the core 10% material (byweight of the microcapsule) Actual Median Volume weighted mediandiameter of the 13.1 μm Diameter(μm) microcapsules Core/Wall Proportionof the mass of the core material 70/30 Ratio to mass of the shellmaterial Fracture As determined by the Fracture Strength 6.83 MPaStrength Test Method described herein. Core Material Fragrance 90%

The polyacrylate microcapsule with the characteristics displayed inTable 3 may be prepared as follows. An oil solution, consisting of112.34 g Fragrance Oil, 12.46 g isopropyl myristate, 2.57 g DuPontVazo-67, 2.06 g Wako Chemicals V-501, is added to a 35° C. temperaturecontrolled steel jacketed reactor, with mixing at 1000 rpm (4 tip, 2″diameter, flat mill blade) and a nitrogen blanket applied at 100 cc/min.The oil solution is heated to 70° C. in 45 minutes, held at 75° C. for45 minutes, and cooled to 50° C. in 75 minutes. This will be called oilsolution A.

In a reactor vessel, an aqueous solution is prepared consisting of 300 gdeionized water to which is dispersed 2.40 grams of Celvol 540 polyvinylalcohol at 25 degrees Centigrade. The mixture is heated to 85 degreesCentigrade and held there for 45 minutes. The solution is cooled to 30degrees Centigrade. 1.03 grams of Wako Chemicals V-501 initiator isadded, along with 0.51 grams of 40% sodium hydroxide solution. Heat thesolution to 50° C., and maintain the solution at that temperature.

To the oil solution A, add 0.56 grams of tert-butyl amino ethylmethacrylate (Sigma Aldrich), 0.56 grams of beta-carboxy ethyl acrylate(Sigma Aldrich), and 46.23 grams of Sartomer CN975 (Sartomer, Inc.). Mixthe acrylate monomers into the oil phase for 10 minutes. This will becalled oil solution B. Use a Caframo mixer with a 4-blade pitchedturbine agitator.

Start nitrogen blanket on top of the aqueous solution in reactor. Starttransferring the oil solution B into the aqueous solution in thereactor, with minimal mixing. Increase mixing to 1800-2500 rpm, for 60minutes to emulsify the oil phase into the water solution. After millingis completed, mixing is continued with a 3″ propeller at 350 rpm. Thebatch is held at 50° C. for 45 minutes, the temperature is increased to75° C. in 30 minutes, held at 75° C. for 4 hours, heated to 95° C. in 30minutes and held at 95° C. for 6 hours. The batch is then allowed tocool to room temperature.

Example 2

The polyacrylate microcapsules described in Table 3 above were includedin Composition C at the indicated percentage and referred to as“Microcapsules”. Compositions A, B, C, and D were included in separatedispensers. Alternatively, Composition A and Composition C may be storedin a first and second reservoir, respectively, in a dispenser having atleast a first and second reservoir. Alternatively, Composition A andComposition D may be stored in a first and second reservoir,respectively, in a dispenser having at least a first and secondreservoir.

(% w/w) Composition A Ethanol (96%) 74.88 Fragrance 14 Water 10.82Diethylamino Hydroxybenzol Hexyl Benzoate 0.195 EthylhexylMethoxycinnamate 0.105 Composition B Water 99.35 Phenoxyethanol 0.3Trometamol 0.25 Disodium EDTA 0.1 Composition C Water 92.5847Microcapsules of Example 1 6.0361 Carbomer 0.5018 Phenoxyethanol 0.2509Magnesium Chloride 0.2456 Sodium Hydroxide 0.1254 Disodium EDTA 0.0836Polyvinyl alcohol 0.0655 Sodium Benzoate 0.0409 Potassium Sorbate 0.0409Xanthan Gum 0.0246 Composition D Water 91.0327 Microcapsules of Example2 7.4485 Carbomer 0.4771 Phenoxyethanol 0.2385 Magnesium Chloride 0.3074Sodium Hydroxide 0.1193 Disodium EDTA 0.0795 Polyvinyl alcohol 0.1639Sodium Benzoate 0.0512 Potassium Sorbate 0.0512 Xanthan Gum 0.0307

It should be understood that every maximum numerical limitation giventhroughout this specification includes every lower numerical limitation,as if such lower numerical limitations were expressly written herein.Every minimum numerical limitation given throughout this specificationwill include every higher numerical limitation, as if such highernumerical limitations were expressly written herein. Every numericalrange given throughout this specification will include every narrowernumerical range that falls within such broader numerical range, as ifsuch narrower numerical ranges were all expressly written herein.

The dimensions and values disclosed herein are not to be understood asbeing strictly limited to the exact numerical values recited. Instead,unless otherwise specified, each such dimension is intended to mean boththe recited value and a functionally equivalent range surrounding thatvalue. For example, a dimension disclosed as “40 mm” is intended to mean“about 40 mm.”

Every document cited herein, including any cross referenced or relatedpatent or application and any patent application or patent to which thisapplication claims priority or benefit thereof, is hereby incorporatedherein by reference in its entirety unless expressly excluded orotherwise limited. The citation of any document is not an admission thatit is prior art with respect to any invention disclosed or claimedherein or that it alone, or in any combination with any other referenceor references, teaches, suggests or discloses any such invention.Further, to the extent that any meaning or definition of a term in thisdocument conflicts with any meaning or definition of the same term in adocument incorporated by reference, the meaning or definition assignedto that term in this document shall govern.

While particular embodiments of the present invention have beenillustrated and described, it would be obvious to those skilled in theart that various other changes and modifications can be made withoutdeparting from the spirit and scope of the invention. It is thereforeintended to cover in the appended claims all such changes andmodifications that are within the scope of this invention.

What is claimed is:
 1. A dispenser comprising: a first reservoir inliquid communication with a first pump, the first pump comprising afirst piston; a second reservoir in liquid communication with a secondpump, the second pump comprising a second piston; at least one exitorifice; and an actuator; wherein the first pump is in liquidcommunication with the at least one exit orifice; wherein the secondpump is in liquid communication with the at least one exit orifice;wherein said first and second pistons are in communication with theactuator; wherein the first reservoir comprises the first composition,the first composition comprising a volatile solvent and a firstfragrance; wherein the second reservoir comprises the secondcomposition, the second composition comprising a carrier and a pluralityof microcapsules; wherein the at least one exit orifice dispenses afirst dose of the first composition and a second dose of the secondcomposition.
 2. The dispenser of claim 1, wherein the second compositionfurther comprises a second fragrance encapsulated within at least someof the microcapsules.
 3. The dispenser of claim 2, wherein the firstfragrance and the second fragrance vary in chemical make-up.
 4. Thedispenser of claim 2, wherein the second fragrance has a ClogP of lessthan 4.5.
 5. The dispenser of claim 2, wherein the microcapsules furthercomprise an oil soluble material that has a ClogP of 4.5 or greater. 6.The dispenser of claim 5, wherein the oil soluble material comprises amaterial selected from the group consisting of mono, di- and tri-estersof C₄-C₂₄ fatty acids and glycerine; isopropryl myristate; soybean oil;hexadecanoic acid; methyl ester; isododecane; and combinations thereof.7. The dispenser of claim 2, wherein the microcapsules comprise a corematerial and a shell that surrounds said core material.
 8. The dispenserof claim 7, wherein the core material to shell ratio by volume of themicrocapsule is greater than or equal to about 50% to 50%, greater thanor equal to about 60% to about 40%, greater than or equal to about 70%to about 30%, from about 90% to about 10%, or from about 98% to about2%.
 9. The dispenser of claim 7, wherein the shell comprises a materialselected from the group consisting of polyacrylates; polyethylenes;polyamides; polystyrenes; polyisoprenes; polycarbonates; polyesters;polyureas; polyurethanes; polyolefins; polysaccharides; epoxy resins;vinyl polymers; urea cross-linked with formaldehyde or gluteraldehyde;melamine cross-linked with formaldehyde; gelatin-polyphosphatecoacervates optionally cross-linked with gluteraldehyde; gelatin-gumArabic coacervates; cross-linked silicone fluids; polyamine reacted withpolyisocyanates; acrylate monomers polymerized via free radicalpolymerization; silk; wool; gelatine; cellulose; proteins; andcombinations thereof.
 10. The dispenser of claim 7, wherein the shellcomprises a polyacrylate material.
 11. The dispenser of claim 7, whereinthe shell comprises a reaction product of a first mixture in thepresence of a second mixture comprising an emulsifier, the first mixturecomprising a reaction product of i) an oil soluble or dispersible aminewith ii) a multifunctional acrylate or methacrylate monomer or oligomer,an oil soluble acid and an initiator, the emulsifier comprising a watersoluble or water dispersible acrylic acid alkyl acid copolymer, analkali or alkali salt, and optionally a water phase initiator.
 12. Thedispenser of claim 11, wherein said amine is a diethylaminoethylmethacrylate, dimethylaminoethyl methacrylate, or tertiarybutylaminoethyl methacrylate.
 13. The dispenser of claim 1, wherein the firstcomposition and second composition are dispensed from the dispenser at avolume ratio of from about 10:1 to about 1:10, about 5:1 to about 1:5,from about 3:1 to about 1:3, or from about 2:1 to about 1:1 of the firstcomposition to the second composition.
 14. The dispenser of claim 1,wherein the first dose and the second dose have a combined volume offrom about 30 microliters to 300 microliters, from about 50 microlitersto 140 microliters, or from about 70 microliters to 130 microliters. 15.The dispenser of claim 1, wherein the microcapsules have a volumeweighted fracture strength from about 0.1 MPa to about 25 MPa, fromabout 0.5 MPa to about 25 MPa, from about 0.5 MPa to about 20 MPa, fromabout 0.5 MPa to about 15 MPa, from about 0.5 to about 10 MPa, or fromabout 1.0 to about 8.0 MPa.
 16. The dispenser of claim 1, wherein themicrocapsules have a median volume-weighted particle size of from about2 microns to about 80 microns, from about 10 microns to about 30microns, or from about 10 microns to about 20 microns.
 17. The dispenserof claim 1, wherein the volatile solvent comprises ethanol.
 18. Adispenser comprising: a first reservoir in liquid communication with afirst pump, the first pump comprising a first piston; a second reservoirin liquid communication with a second pump, the second pump comprising asecond piston; at least one exit orifice; and an actuator; wherein thefirst pump is in liquid communication with the at least one exitorifice; wherein the second pump is in liquid communication with the atleast one exit orifice; wherein said first and second pistons are incommunication with the actuator; wherein the first reservoir comprisesthe first composition, the first composition comprising ethanol and afirst fragrance; wherein the second reservoir comprises the secondcomposition, the second composition comprising water; a suspendingagent; and a plurality of microcapsules comprising a polyacrylate shell,at least some of which encapsulate a second perfume which may be thesame or different from the first perfume; wherein the at least one exitorifice dispenses a dose of the first composition and a dose of thesecond composition at about the same time; and wherein the firstcomposition and second composition are dispensed from the dispenser at avolume ratio of about 2:1 to about 1:1.
 19. The dispenser of claim 18,wherein the volume weighted fracture strength of the majority ofmicrocapsules is from about 1.0 to about 8.0 MPa.
 20. The dispenser ofclaim 19, wherein the first dose and the second dose have a combinedvolume of from about 30 microliters to 300 microliters, from about 50microliters to 140 microliters, or from about 70 microliters to 130microliters.